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Basis of Presentation and Summary of Significant Accounting Policies - Additional Information (Detail) gallon in Thousands, $ in Thousands			12 Months Ended
	Jul. 29, 2019	Jul. 26, 2019 shares	Dec. 31, 2020 USD ($) gallon shares	Dec. 31, 2019 USD ($)
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Reverse stock split, conversion ratio	0.125
Right-of-use assets | $			$ 786	$ 965
Operating lease, liabilities | $			$ 852
Dilutive EPS exclude warrants to purchase of common stock (in shares) | shares			62,500
Bomay
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Percentage of interest in a joint venture			40.00%
Share Exchange Agreement | Board of Directors Chairman
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Percentage of beneficial ownership		88.40%
Share Exchange Agreement | Stabilis LLC
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Number of shares of the combined company (in shares) | shares		13,178,750
PEG Partners LLC | Share Exchange Agreement
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Percentage of outstanding limited liability owned		80.00%
American Electric | Share Exchange Agreement
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Percentage of shares issued		90.00%
American Electric | Stabilis LLC | Share Exchange Agreement
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Percentage of outstanding limited liability owned		100.00%
American Electric | PEG Partners LLC | Share Exchange Agreement
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Percentage of outstanding limited liability owned		20.00%
American Electric | Prometheus Energy Group Inc. | Share Exchange Agreement
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Percentage of outstanding limited liability owned		100.00%
AEGIS NG LLC | PEG Partners LLC | Share Exchange Agreement
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Noncontrolling interest percentage		20.00%
Stabilis LLC | PEG Partners LLC | Share Exchange Agreement
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Percentage of outstanding limited liability owned		80.00%
Stabilis Energy, Inc. | American Electric | Share Exchange Agreement
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Percentage of outstanding limited liability owned		100.00%
Texas
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Daily capacity of production facility in gallons | gallon			100
Permian Basin
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Daily capacity of production facility in gallons | gallon			25

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